.topbar {
	position: fixed;
	left: 0px;
	top:0px;
	width: 100%;
	height: 44px;
	z-index: 1;
	color:'#fff';
	background-color:rgba(40,40,140,0.5);
}
.bottombar {
	position: fixed;
	left: 0px;
	bottom: 0px;
	z-index: 1;
	width: 100%;
	height: 44px;
	background-color:rgba(40,40,140,0.5);
}
.btn {
	cursor: pointer;
}

.abs {
	position: absolute;
	left:0px;
	width: 100%;
	height: 100%;
}

.img {
	background-repeat: no-repeat;
	background-position: center;
	background-size: contain;
}

.imgAuto {
	background-repeat: no-repeat;
	background-position: center;
	background-size: cover;
}

.tc {
	text-align: center;
}

.opengl {
	transform-style: preserve-3d;
}